Original horizontal Coca Cola original Our American Steel #4. Iron and steel build the future. The center image of this image is an art deco image of skyscrapers; modern bridges; with the caption 'from days of old to days of steel'. The small vignettes along the bottom of the 4th in this series shows better working conditions; strong bridges; accurage work; chemistry in the steel mill; testing steel; new kinds of steel; official stands; and American leadership in steel.